Senones

The Senones were an ancient Celtic Gallic tribe which, under Brennus, sacked Rome in 390 BC. The Senones, Aedui, Ambarri, Arverni, Aulerci, and Carnutes migrated towards Italy in 400 BC, driving out the Umbrians from Forli to Ancona and Terni. The Senones founded Sena Gallica (Senigallia), which became their capital, having settled further south than other migrant Gallic tribes. They came to occupy the eastern coast of central Italy, and their conflict with Clusium led to Roman intervention in the war; in 390 BC, the Senones defeated the Romans at the Battle of the Allia and proceeded to sack Rome. However, Brennus was slain when the Romans retook their capital, and the Senones were finally subdued in 283 BC by Public Cornelius Dolabella and driven out of their territory in Italy. They migrated to the Danube, Macedonia, and Asia Minor, while a branch of them were defeated by Julius Caesar during his Gallic Wars in 51 BC.